Bingley etal
backhoe control console
def. pub.
sn



7'" 34 o, WA DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Publishedat the request of the applicant or owner in accordance with the Noticeof Apr. 11, 1968, 849 0.G. 1221. Identification is by serial number ofthe application and the heading indicates the number of pages ofspecification, including claims, and of sheets or drawing contained inthe application as originally filed. The file of this application isavailable to the public for inspection; reproduction may be purchasedfor '30 cents per sheet.

Applications published under the Defensive Publication Program have notbeen examined as to the merits of alleged invention. The Patent Oflicemakes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED MARCH 18, 1969 76 it t? A tractor-mounted backhoe digging unitcomprises conventional pivotally interconnected swing post, boom,dipperstick and bucket. Spaced stabilizers mounted at the rear of thetractor are extensible into ground engagement to stabilize the tractorduring digging. Conventional hydraulic cylinders which are supplied byhydraulic pressure fluid from a tractor mounted source through ahydraulic circuit are provided for extending the stabilizers and formoving the swing post, boom, dippcrstick and bucket. The hydrauliccircuit includes control valves for operating the cylinders and whichare each operated by a control lever. The boom, dippcrstick and bucketvalves are combined into a first valve unit which is located in a narrowcompact control console mounted at the rear of the tractor adjacent theoperators seat. The swing and stabilizer valves are combined into asecond valve unit located on the tractor beneath the control console andare connected to the valves by linkages. By both spacing the mounting ofthe valve units and mounting all control levers together on one shaft,the control console may be made sufiiciently compact and narrow so thatit may be straddled by the operators legs, improve operator visibilityand provide better access to the control levers.

March 18, 1969 G. w. BINGLEY ETAL DEF. PUB.

BACKHOE CONTROL CONSOLE SN-742600 Filed July 5, 1968 Sheet l of 2 INVENTORS.

'TXQQ March 18, 1969 G. w. BINGLEY ETA!- DEF. UB-

BACKHOE CONTROL CONSOLE SN 7%600 Filed July 5, 1968 Sheet Z of 2INVENTORS.

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